Power-transmitting mechanism



Nov. 4, v1930. G. E. MoLYNEux POWER TRANSMITTIHG MECHANISM Filed Nov. 2s, 192s Patented Nov. 4, 1930 yesoneri E. MOLYNEUX, onBAYoNNE, NEW JERSEY r i Application filed November ze, 192s. serial/No, $22,567..) f

y l k'In the manufacture of coiled filaments for use in incandescent lamps the'tungsten wire is coiled in groupsofjsingle coils,`the groups being separated from f one another by yuncoiled sections oil/wire for convenience in securing thel ends of each filament, after it has been separated from the adjacent filament, to theterminals. Great care must be exercised in themanufacture of the filaments in order thatY there shall be n'o distortion ofthe filamentlwhichmight bring adjacent single coils into contact with one another.V The mechanism of the present invention has been devised with particular reference to the manufacture of such lilaments, although, as will be readily understood, it is capable of use for Aother specific purposes. In accordance with the invention that part of the mechanism by which, inthe specific use described, the wire is fed tothe ceiling' devices (with which the presenty invention is in nowi's'e concerned) has its movement, normal to the coiling, accelerated Aatintervals for the purpose of feeding the'wiremore rapidly. In order thatV 25 'perfect accuracy may be attained it is essential that-there shall be no backlash orlost motion ordwell at thetime when-the acceleration commences or at the time when the acceleration ends. The mechanism which is 30 thefsubject of-'the present invention has been .so designed as to meet'alloil the requirements referred to. The. part which *is to have its movement accelerated at intervals is driven A normally, that. is, between the 'intervals of y the eccentric plate dytends kto keep the 1m- V85 vvpeller-onrthe l high part ofthe cam or eccenacceleration, by one driver and is driven during each period of acceleration by a driver independent of the first, the two -driving v mechanisms being so related that the accelerating driver will takehold and let go without any backlashor lost motion'or dwell.

The invention will bek more fully explained hereinafter with reference to the accompanying drawing in which it isillustrated as emy bodied in suitable Vstructure Yand in which:

Figure 1 is a view` in sectional elevation on` the plane indicatedy by the broken line 1 1 of Figure 2.

looking in the direction of n s the arrows, and

partly broken out; 1 1

Y Figure 3 is a view in section on the plane indicate-dr by the broken Vlin'e 3 3 of Figure l looking'in the directionof the arrows.

vFiguree is a viewin section onl the plane indicated by the broken line 14-4 of Figure 2 looking inthe direction of the arrows;

Figure 5 is a view of a series of groups' of coils ofwire-with stretched out or'uncoil'ed sections of Wire between the groups.

In the embodiment of the invention illustrated thepart which is primarily to have its movement accelerated vat intervals is shown as a druma` which isfixed-on a' shaft b by which power is transmitted to an element not shown. The drum maybe assumedY to be drivenat rnormalspeed from a worm gear c vwhich is' shown as, having secured thereto, through theirr'espectiv'e hubs, a plate al which 70 isf'mounted loosely on. the'shai't l) and has [formedthereon'an eccentric Zland is also formed with Sa limiting notch d2.V SupportedV upon the plate Z and coaxial with the shaft b vand drum-z is an impeller e which'ismoved into operative engagement with the drum a by Athe eccentric d1 through vthe intermediary ofl balls er V rolle'frsre1 interposed between the vperiphery `of theeccentric and the periphery Y Aot the cvvircularlspacelinlthe "impellen The .80 impeller isfor'med at 'one end,- as'fa't e2, for driving. engagementr with an internal shoulder azof the drum ai Av spring f, fixed at'one endy to the impellere andat: the other'end'to tric d1, yielding topermit relativeV movement and the impeller iis limited by a pin es carried by the'impellerandentering the notch d2 "of the eccentric plate.`

y. 5 It Vwill beobserved that under normal conlditions' the drumuawill be driven ata uniormgrat'e jby'the driver e through the'im- 95 pellere and that 'the driving engagement is such that the drum'can be vvdriven atan ac- Y y --celerated' rate. i Figure 2 is a view in section onthe plane 50 indicated by the broken line 2-2 of Figure l The devicesbyz which the` drum a is. driven Yatfthe'accelerated,irate1 are in general similar 100 to the devices at which the drum is driven at the normal rate and may be placed convenientl at the opposite side of the web al of the rum. As shown, there is a plate g mounted loosely on the shaft b and formed with an eccentric g1 and having secured thereto an accelerating driver 71, which is shown as a lever and may be actuated at the required intervals by any suitable means. An impeller z' also coaxial with the shaft b and drum a is formed' `for cooperation,v

through the balls or rollers il, with a cam or eccentric g1 and is formed as rat i2 for driving engagement with Vthe internal vvshoulder a3 of the drum a. The impeller is also Vprovided with a pin 3 to engage a limiting notch g2 of the cam plate g. A rspring c, connected to the impeller and to the cam plate, tends to keep the-impeller on the high part of the cam or eccentric g1, yielding to permit relative back movement of the impeller out of engagement with the drum.

It will be seen that when the eccentric plate g is actuated by the accelerating driver h, theimpeller z' is brought into driving engagement with the drum andthe drum is driven at the accelerated rate independently of the normal driving devices.

It will be observed that the two impellers are oppositely placed.

The effect of the mechanism, as applied to the feeding of wire to Abe coiled, is illustrated in Figure 5, in which a series of groups of coils m are separated by uncoiled or stretched out sections m1, so that each group of coils can be separated from the adjacent groups of coils with extensions at each end for convenient attachment to the lamp terminals. Y

In they operation of the mechanism described the drum a is driven at what is called normal speed from the worm gear c through the impeller e. At intervals the impeller z' is actuated by the accelerating driver L and causes movement of` the drum at accelerated speed, this action being brief and discontinued. During the action of the accelerating driver the-'drum moves ahead of the normal speedV impeller e andV as vthe action of the accelerating impeller ceases the normal `impeller engages the'drum and continues its movement at thenormal speed.

It'will be understood that `the Vinvention is independent of theparticular use to which -it may be applied and that various changes in details of construction andY arrangement can be made to suit different conditions of use, the invention not being limited to the particular construction and arrangement shown and described except as pointed out in the claims. Y

I claim as my invention:

1. A power transmitting mechanism comprising a driven part, 'a normal driver, an impeller for,l cooperation V,with the driven part, means actuated by the normal driver to effect operative engagement between the impeller and the driven part, a second impeller for cooperation with the driven part, an accelerating driver independent of the normal driver, and means actuated by the accelerating driver to effect operative engagement between the second impeller and the driven part, the impeller` being coaxial with the driven part.

2. A power' transmitting mechanism comprising a driven part, a normal driver, an impeller for cooperation with the driven part, an eccentricactuated by the normal driver and inoperative relation with the impeller to effect operative engagement between the impeller and 4the driven part, a second impeller forr cooperation with the driven part, an accelerating driver, and an eccentric actuated by the accelerating driver and in operative relation with the second impeller to effect operative engagement between the second impeller and the driven part. n

. 3. A power transmitting mechanism comprising a driven part, a normal driver, an impeller for cooperation with the driven part, an eccentric actuated by the normal driver and in operative relation with the impeller to effect operative engagement between the impeller and the driven part, means to permit limited relative rotary, movement of the impeller and the eccentric, a spring tending to effect such limited movement, a second impeller for cooperation with the driven part, an accelerating driver, an eccentric actuated by the accelerating driver and in operative relation with the second impeller to effect operative engagement between the second impeller'andthe driven part, means to permit limited relative movement of the second eccentric and the second impeller, and a spring tending to effect movement of the impeller in one direction.

This specification signed this 27th day of November, A. D. 1928.

GEORGE E. MOLYNEUX. 

